Possible causes of Arm redness

34 conditions can cause this symptom. Most common are listed first.

• Allergic reaction Common Urgent Pediatric
• Bee sting Common Pediatric
• Body lice Common Pediatric
• Boil (small skin abscess) Common Pediatric
• Burns Common Urgent Pediatric
• Cellulitis (skin infection) Common Pediatric
• Chemical burn Common Pediatric
• Deep venous thrombosis (DVT, venous blood clot) Common Urgent Pediatric
• Eczema Common Pediatric
• Folliculitis (hair follicle infection) Common Pediatric
• Insect bite Common Pediatric
• Medication reaction Common Urgent Pediatric
• Mosquito bite Common Pediatric
• Poison ivy (poison oak, poison sumac) Common Pediatric
• Psoriasis Common
• Scabies Common Pediatric
• Shingles (herpes zoster) Common
• Sunburn Common Pediatric
• Tinea (fungal skin infection) Common Pediatric
• Ant bite
• Anticholinergic overdose Urgent
• Bed bugs
• Centipede sting
• Chicken pox (varicella) Pediatric
• Erythrasma (chronic bacterial skin infection)
• Heat rash
• Heat stroke Urgent
• Lichen planus (chronic skin inflammation)
• Necrotizing fasciitis (soft tissue infection) Urgent
• Pityriasis rosea (inflammatory skin rash)
• Scalded skin syndrome Urgent Pediatric
• Sea lice
• Steven Johnson syndrome Urgent
• Swimmer's itch (cercarial dermatitis)